Observation of roton density of states in two-dimensional Landau-level excitations
Inelastic light scattering by inter-Landau-level excitations of the 2D electron gas in high-mobility GaAs structures in a perpendicular magnetic field was observed at the energies of the critical points in the mode dispersions. For Landau-level filling factors /nu//ge/, structure in the spectra indi...
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| Veröffentlicht in: | Phys. Rev. Lett.; (United States) 1988-12, Vol.61 (23), p.2701-2704 |
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| container_title | Phys. Rev. Lett.; (United States) |
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| creator | PINCZUK, A VALLADARES, J. P HEIMAN, D GOSSARD, A. C ENGLISH, J. H TU, C. W PFEIFFER, L WEST, K |
| description | Inelastic light scattering by inter-Landau-level excitations of the 2D electron gas in high-mobility GaAs structures in a perpendicular magnetic field was observed at the energies of the critical points in the mode dispersions. For Landau-level filling factors /nu//ge/, structure in the spectra indicates the excitonic binding and roton behavior predicted by the Hartree-Fock approximation. The large critical-point wave vectors, qapprox. >((h/2/pi/)c/eB)/sup -1/2/approx. >10/sup 6/ cm/sup -1/, are probably accessible in resonant light scattering through the residual disorder that broadens the Landau levels. |
| doi_str_mv | 10.1103/PhysRevLett.61.2701 |
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P ; HEIMAN, D ; GOSSARD, A. C ; ENGLISH, J. H ; TU, C. W ; PFEIFFER, L ; WEST, K</creator><creatorcontrib>PINCZUK, A ; VALLADARES, J. P ; HEIMAN, D ; GOSSARD, A. C ; ENGLISH, J. H ; TU, C. W ; PFEIFFER, L ; WEST, K ; ATandT Bell Laboratories, Murray Hill, New Jersey 07974</creatorcontrib><description>Inelastic light scattering by inter-Landau-level excitations of the 2D electron gas in high-mobility GaAs structures in a perpendicular magnetic field was observed at the energies of the critical points in the mode dispersions. For Landau-level filling factors /nu//ge/, structure in the spectra indicates the excitonic binding and roton behavior predicted by the Hartree-Fock approximation. The large critical-point wave vectors, qapprox. >((h/2/pi/)c/eB)/sup -1/2/approx. >10/sup 6/ cm/sup -1/, are probably accessible in resonant light scattering through the residual disorder that broadens the Landau levels.</description><identifier>ISSN: 0031-9007</identifier><identifier>EISSN: 1079-7114</identifier><identifier>DOI: 10.1103/PhysRevLett.61.2701</identifier><identifier>PMID: 10039200</identifier><identifier>CODEN: PRLTAO</identifier><language>eng</language><publisher>Ridge, NY: American Physical Society</publisher><subject>ANNEALING ; ARGON IONS ; ATOM TRANSPORT ; AUGER ELECTRON SPECTROSCOPY ; CATIONS ; CHARGED PARTICLES ; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; DIFFUSION ; ELECTRON SPECTROSCOPY ; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures ; ELEMENTS ; ENERGY RANGE ; Exact sciences and technology ; HEAT TREATMENTS ; HIGH TEMPERATURE ; INHIBITION ; INTERFACES ; IONS ; KEV RANGE ; KEV RANGE 01-10 ; LAYERS ; MEDIUM TEMPERATURE ; METALS ; NEUTRAL-PARTICLE TRANSPORT ; NICKEL ; Physics ; RADIATION TRANSPORT ; SEMIMETALS ; SILICON ; SILVER ; SORPTIVE PROPERTIES ; SPECTROSCOPY ; SPUTTERING ; Surface and interface electron states ; SURFACE PROPERTIES ; TEMPERATURE DEPENDENCE ; TRANSITION ELEMENTS 656003 -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)</subject><ispartof>Phys. 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The large critical-point wave vectors, qapprox. >((h/2/pi/)c/eB)/sup -1/2/approx. >10/sup 6/ cm/sup -1/, are probably accessible in resonant light scattering through the residual disorder that broadens the Landau levels.</description><subject>ANNEALING</subject><subject>ARGON IONS</subject><subject>ATOM TRANSPORT</subject><subject>AUGER ELECTRON SPECTROSCOPY</subject><subject>CATIONS</subject><subject>CHARGED PARTICLES</subject><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>DIFFUSION</subject><subject>ELECTRON SPECTROSCOPY</subject><subject>Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures</subject><subject>ELEMENTS</subject><subject>ENERGY RANGE</subject><subject>Exact sciences and technology</subject><subject>HEAT TREATMENTS</subject><subject>HIGH TEMPERATURE</subject><subject>INHIBITION</subject><subject>INTERFACES</subject><subject>IONS</subject><subject>KEV RANGE</subject><subject>KEV RANGE 01-10</subject><subject>LAYERS</subject><subject>MEDIUM TEMPERATURE</subject><subject>METALS</subject><subject>NEUTRAL-PARTICLE TRANSPORT</subject><subject>NICKEL</subject><subject>Physics</subject><subject>RADIATION TRANSPORT</subject><subject>SEMIMETALS</subject><subject>SILICON</subject><subject>SILVER</subject><subject>SORPTIVE PROPERTIES</subject><subject>SPECTROSCOPY</subject><subject>SPUTTERING</subject><subject>Surface and interface electron states</subject><subject>SURFACE PROPERTIES</subject><subject>TEMPERATURE DEPENDENCE</subject><subject>TRANSITION ELEMENTS 656003 -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)</subject><issn>0031-9007</issn><issn>1079-7114</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1988</creationdate><recordtype>article</recordtype><recordid>eNpNkEtr3DAQgEVpaTZpf0GhmNJDLt7OSLItHUvoCxZSQnsWsjwmKl4r9Wg33X9fbXcpOc0w882DT4g3CGtEUB--3x_4jvYbynnd4lp2gM_ECqGzdYeon4sVgMLaAnQX4pL5FwCgbM1LcYGlYyXAStzd9kzL3ueY5iqN1ZJySQaaOebDscDZZ-IqzlV-TPUQt8dWmv1Ubfw8-F090Z6miv6EmP9t4VfixegnptfneCV-fv704-Zrvbn98u3m46YOGmyuqZd9Vx41YO1gfNtoY6BpvLZm8E1rZQP9gIR6JECtoEElG61aC1KNlrS6Eu9OexPn6Ljcp3Af0jxTyK61SimjCnR9gh6W9HtHnN02cqBp8jOlHTs0jZWt1sYWVJ3QsCTmhUb3sMStXw4OwR2NuyfGXYvuaLxMvT0f2PVbGp7MnBQX4P0Z8Bz8NC5-DpH_c8WAAgnqL-7dimw</recordid><startdate>19881205</startdate><enddate>19881205</enddate><creator>PINCZUK, A</creator><creator>VALLADARES, J. 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W ; PFEIFFER, L ; WEST, K</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c409t-eb2b77118099d8a65488055a498da569250bd1e14fe01430513254369023f9e43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1988</creationdate><topic>ANNEALING</topic><topic>ARGON IONS</topic><topic>ATOM TRANSPORT</topic><topic>AUGER ELECTRON SPECTROSCOPY</topic><topic>CATIONS</topic><topic>CHARGED PARTICLES</topic><topic>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>DIFFUSION</topic><topic>ELECTRON SPECTROSCOPY</topic><topic>Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures</topic><topic>ELEMENTS</topic><topic>ENERGY RANGE</topic><topic>Exact sciences and technology</topic><topic>HEAT TREATMENTS</topic><topic>HIGH TEMPERATURE</topic><topic>INHIBITION</topic><topic>INTERFACES</topic><topic>IONS</topic><topic>KEV RANGE</topic><topic>KEV RANGE 01-10</topic><topic>LAYERS</topic><topic>MEDIUM TEMPERATURE</topic><topic>METALS</topic><topic>NEUTRAL-PARTICLE TRANSPORT</topic><topic>NICKEL</topic><topic>Physics</topic><topic>RADIATION TRANSPORT</topic><topic>SEMIMETALS</topic><topic>SILICON</topic><topic>SILVER</topic><topic>SORPTIVE PROPERTIES</topic><topic>SPECTROSCOPY</topic><topic>SPUTTERING</topic><topic>Surface and interface electron states</topic><topic>SURFACE PROPERTIES</topic><topic>TEMPERATURE DEPENDENCE</topic><topic>TRANSITION ELEMENTS 656003 -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>PINCZUK, A</creatorcontrib><creatorcontrib>VALLADARES, J. P</creatorcontrib><creatorcontrib>HEIMAN, D</creatorcontrib><creatorcontrib>GOSSARD, A. C</creatorcontrib><creatorcontrib>ENGLISH, J. H</creatorcontrib><creatorcontrib>TU, C. W</creatorcontrib><creatorcontrib>PFEIFFER, L</creatorcontrib><creatorcontrib>WEST, K</creatorcontrib><creatorcontrib>ATandT Bell Laboratories, Murray Hill, New Jersey 07974</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><jtitle>Phys. Rev. Lett.; (United States)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>PINCZUK, A</au><au>VALLADARES, J. P</au><au>HEIMAN, D</au><au>GOSSARD, A. C</au><au>ENGLISH, J. H</au><au>TU, C. 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| subjects | ANNEALING ARGON IONS ATOM TRANSPORT AUGER ELECTRON SPECTROSCOPY CATIONS CHARGED PARTICLES CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Condensed matter: electronic structure, electrical, magnetic, and optical properties DIFFUSION ELECTRON SPECTROSCOPY Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures ELEMENTS ENERGY RANGE Exact sciences and technology HEAT TREATMENTS HIGH TEMPERATURE INHIBITION INTERFACES IONS KEV RANGE KEV RANGE 01-10 LAYERS MEDIUM TEMPERATURE METALS NEUTRAL-PARTICLE TRANSPORT NICKEL Physics RADIATION TRANSPORT SEMIMETALS SILICON SILVER SORPTIVE PROPERTIES SPECTROSCOPY SPUTTERING Surface and interface electron states SURFACE PROPERTIES TEMPERATURE DEPENDENCE TRANSITION ELEMENTS 656003 -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-) |
| title | Observation of roton density of states in two-dimensional Landau-level excitations |
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